Coal-washing apparatus.



J. A. MONTGOMERY.

GOAL WASHING APPARATUS.

APPLIUATION 211,111) 11111. 16, 191i.

Patented Jul 18, 1911.

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COLUMplA PLANO-GRAPH 1:1). WASHINGTON, n. C.

1. 1, MONTGOMERY. GOAL WASHING APPARATUS.

APPLICATION FILED JAN.16, 1911.

Patented July 18, 1911.

3 SHEETS-SHEET 2.

CDLIJMIIA PLANOGRAPH $0., WASHINGTON. D. C-

J. A. MONTGOMERY.

I GOAL WASHING APPARATUS.

Col-NINA WRAP" C41, WASHINGTON, D. C.

lUNfTED STATES PATENT OFFICE.

JAMES A. MONTGOMERY, OF BIRMINGHAM, ALABAMA, ASSIGNOR TO MONTGOMERY COALWASHING & MANUFACTURING COMPANY, A CORPORATION.

COAL-WASHING APPARATUS.

- Specification of Letters Patent.

Patented July 18, 1911.

To all whom it may concern:

Be it known that I, JAMES A. MONTGOM- ERY, a citizen of the UnitedStates, residing at Birmingham, in the county of Jefferson and State ofAlabama, have invented certain new and useful Improvements in CoallVashing Apparatus; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters and figures of reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful improvements in coal washingapparatus and the object in view is to produce a simple and efficientapparatus designed to meet the requirements of small coal operators andconsists in various details of construction and combinations andarrangements of parts which will be hereinafter fully described and thenspecifically defined in the appended claim.

I illustrate my invention in the accompanying drawings, in Which:

Figure l is a side elevation of improved coal washing apparatus, partsbeing broken away to better illustrate details of construction of theinvention. Fig. 2 is a plan view, portions of the apparatus beingremoved. Fig. 3 is a vertical sectional view through Fig. 1, and Fig. 4is an enlarged detail view of a plunger. Fig. 5 is a detail View of apart of the invention.

Reference now being had to the details of the drawings, by letter, Adesignates the frame of the apparatus which has two oompartments B and Cwith an intervening chamber D. A coal bin E is mounted at any suitablelocation and has an exit opening E positioned adjacent to the upper endof the compartment B and affording means whereby the raw coal may beadmitted to the compartment B and its feed regulated by means of thegate E which is connected by a link E with the tilting lever 4 which inturn is engaged by an adjusting screw E mounted in a suitable bearing Eand which screw has a hand wheel E affording means for turning the screwto raise and lower the gate.

Mounted within the compartment B is a fixed screen F, which is disposedat an inclination and adjacent to its lower end is a passageway Gthrough the partition H, affording means whereby slate which is heavierthan the coal and which settles upon the screen may make exit into thechamber D from which it may be elevated by means of the endless carrierI passing about the sprocket wheels -I and I the former of whichsprocket wheels is fixed to the shaft I Mounted within the compartment Bis a plunger K, an enlarged detail perspective view of which is shown inFig. 4 of the drawings, and which has at its ends friction plates K andside walls K with open ends and top. A shaft K is mounted in suitablehearings in the side walls K and the bottom of said plunger is adaptedto conform to the area of the chamber B within which it is designed tohave a vertical reciprocating movement. It will be noted that the sidewalls K of said plunger form the side walls of the compartment on eitherside of the screen and to that portion of the compartment which containsthe coal and slate. Each of said walls has a movement in a spaceintermediate the screen and the side walls of the compartment B. Adriving shaft, designated by letter J, is mounted in suitable bearings Jupon the frame of the apparatus and an eccentric wheel L is fixed to theshaft J and is adapted to actuate the eccentric strap L to which thepitmen O are fastened, the lower ends of which are j ournaled upon theshaft K thus serving as a means for giving a reciprocating movement tothe plunger as the shaft J is rotated. A deflecting member Q, is fixedin the compartment above the screen and disposed at an inclination andin front of the exit end of the bin E and serves to deflect the coal andslate as it is introduced into the compartment against the screen below.

Immediately below the plunger is a compartment R adapted to containwater to be raised by the plunger through the screen for the purpose ofseparating the coal from the slate and the valve apparatus R in thebottom of the plunger allows the water to pass into the compartment Kabove the plunger as the latter is moved downward, said valves closingupon the upper throw of the plunger. The bottom of the water containingcompartment R has double inclines S in which are valves S opening upwardto allow water beneath the double mclmed bottom of the compartment R topass above the same when the plunger is raised. In the bottom of thecompartment having the inclined bottom is a trough S in which the shaftI is ournaled and which has a worm S thereon, serving as means forcausing any settlings which may accumulate in said trough to be fedthrough the wall H into the compartment B and be elevated by the carrierI to and emptied into the chute I In order to control the exit opening Gfor the passage of the slate as it leaves the screen, a gate T isprovided which is connected by means of a rod T with the lever T whichin turn is pivotally connected to the link T. An angle lever T has itsshort arm pivotally connected with the link T and a pawl T carried bysaid lever is designed to engage teeth of the segment T Said lever Textends over the shaft K and has a counterbalance weight T thereon. Asthe pitman O raises the shaft K the latter will contact with the lever Tand cause the same to tilt and the gate to open, the counter-balanceserving to close the gate as the plunger lowers.

The compartment C has an inclined bottom C and a shaft- C is journaledtherein upon which is a sprocket wheel C about which the endlesssprocket chain C passes, having the buckets C and C is a. sprocket wheelfixed to the shaft 0 and over which the carrier C travels. A drivingchain G passes about the sprocket wheel C on the shaft C and one on thedriving shaft J.

A slight distance above the exit opening G is an overflow passageway Vwith an inclined trough V leading therefrom which bridges thecompartment D and opens into the compartment C and affords means wherebythe coal, which is lighter than the slate and which has been moved bythe upward movement of the plunger, is allowed to pass into thecompartment C in which water is contained. The compartment C overflowsat C and the water is adapted to pass into the trough 6, shown in topplan view, and. conveyed back to the space underneath the compartmenthaving the inclined bottom R, aifording a supply of water to be utilizedin washing the coal.

The operation of my apparatus will be readily understood and is asfollows :-The

coal is fed by gravity from the bin on to the screen and, as the shaft Jis rotated, the plunger will cause water above the sam to be raised upthrough the screen, thus raising the coal and allowing the slate whichis heavier than the latter to settle upon the screen. As the coal israised by the water, it will make exit through the trough V, beingraised by the water therefrom into the compartment C. The slate willmake exit through the opening G and into the compartment D from which itwill be raised by the endless conveyer I and dumped into the trough I.As the plunger is raised by the eccentric upon the shaft J, the suctionformed underneath the plunger will cause the valves S to unseat andallow the water flowing from the compartment 0 to pass into the spaceabove the bottom S and the plunger. On the downward throw of theplunger, the valves S will be seated and the valves in the plungeropened, allowing water to pass through the plunger into the spaceintermediate the same and the screen. It will thus be seen that aconstant supply of water will be utilized for washing the coal andafterward reused. The slate and the coal will, by the conveyers, becarried away in diflerent directions, as will be readily understood.

hat I claim to be new is A coal washing apparatus having a screenmounted therein dividing the apparatus into compartments and havingspaces intervening between the opposite edges thereof and the side wallsof the apparatus, a plunger with open ends and flanges at the ends ofthe bottom and extending above the upper surface thereof, said plungerhaving parallel walls upon opposite sides thereof extending its entirelength and adapted to move through said spaces intermediate the edges ofthe screen and the side walls of the apaaratus and form side walls tothe compartment above the screen at all times, and means for verticallyreciprocating the plunger.

In testimony whereof I hereunto atlix my signature in the presence oftwo witnesses.

JAMES A. MONTGOMERY.

Vitnesses Mrs. Rom. P. FAmss, ANNIE L. PEACE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

